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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
for the guidance of teachers
0417 INFORMATION AND COMMUNICATION
TECHNOLOGY
0417/13
Paper 1 (Written), maximum raw mark 100
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of
the examination. It shows the basis on which Examiners were instructed to award marks. It does not
indicate the details of the discussions that took place at an Examiners’ meeting before marking began,
which would have considered the acceptability of alternative answers.
Mark schemes must be read in conjunction with the question papers and the report on the
examination.
• Cambridge will not enter into discussions or correspondence in connection with these mark schemes.
Cambridge is publishing the mark schemes for the May/June 2011 question papers for most IGCSE,
GCE Advanced Level and Advanced Subsidiary Level syllabuses and some Ordinary Level
syllabuses.
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MARK SCHEME for the May/June 2011 question paper
s
er
International General Certificate of Secondary Education
Page 2
Mark Scheme: Teachers’ version
IGCSE – May/June 2011
Ques.
No.
Answer
1
A
C
Syllabus
0417
Paper
13
Part mark
Microphone
Pen drive
B
D
Scanner
Web cam
1, 1
1, 1
2
Flash memory card
Graph plotter
Graphics tablet
1
Laser printer
Magnetic disc
Touchpad
1
3
True
Presentation software is used to create slide shows
False
1
Laptop computers do not have USB ports
DTP software can be used to produce databases
1
Measurement software is used to create magazines
1
Buzzers are input devices
1
1
A bar code reader
is used to input data about products at a POS.
1
(b)
A laser printer
is used to produce high quality hard copy.
1
(c)
A temperature sensor
sends data to a microprocessor in a washing
machine.
1
4 (a)
(d)
A graphics tablet
is used to input freehand drawings to a computer.
1
(e)
A speaker
is used to output sounds from the computer.
1
5 (a)
Database
1
Microphone
1
Video camera
1
Keyboard
Spreadsheet
Animation
(b)
One advantage from:
She can update it more regularly
More personal
Can be used as a diary
More interactive
One disadvantage from:
Has to be continually updated
Animation/video/sound more difficult to incorporate
It’s possible for people she might not want (e.g. outside school) to see her blog
Not everyone she would want to see it might have the internet
© University of Cambridge International Examinations 2011
2
Page 3
6
Mark Scheme: Teachers’ version
IGCSE – May/June 2011
PENDOWN
LEFT
REPEAT
FORWARD
RIGHT
END REPEAT
90
6
50
60
1 mark for each correct statement
7
8
Syllabus
0417
Paper
13
Alternative answer:
PENDOWN
RIGHT
90
REPEAT
6
BACKWARD 50
RIGHT
60
END REPEAT
5
to produce very large high quality hard copy
dot matrix printer
1
to display data from a computer on to a large screen
plotter
1
to alert mobile phone users to incoming calls
multimedia projector
1
to output multipart forms
buzzer
1
Boolean
Meaning
Data that is only one of two possible values such as yes/no, true/false
Example
Gender/Absent or present
1
Alphanumeric
Meaning
Any character of the alphabet or number or punctuation mark
Example
Name/Tutor group/Address/Phone number
1
Numeric
Meaning
Must be a digit(s) or decimal number
Example
Number of siblings/exam marks/number of days present/absent
1
1
1
1
9
True False
Records are updated immediately when using online
processing
1
A transaction file is often created when batch processing is
used
1
The processing of bank cheques is an example of batch
processing
1
Batch processing is needed for operating ATMs
© University of Cambridge International Examinations 2011
1
Page 4
10
Mark Scheme: Teachers’ version
IGCSE – May/June 2011
Syllabus
0417
Paper
13
Five from:
Data is gathered/collected from experts
Knowledge base is designed/created
A structure to relate each item in the database/knowledge base is created
An interrogation technique to access the data is created
A user interface/method of displaying the results/method of inputting data/input
screen/output screen is designed/created
The inference engine is designed/created
The rules base is designed/created
The system is tested
5
11 (a)
4
1
(b)
7
1
(c)
The Old Curiosity Shop
1
(d)
The Moon’s a Balloon
1
(e)
Three from:
Format check
Checks data in each record is in same format
Data in the form dd/mm/yy
Must be two digits then slash then two digits then slash then two digits
OR
Length check
No less than 8 characters
No more than 8 characters only
OR
(Invalid) character/type check
Only digits or slashes can be entered
No alphabetic or punctuation marks other than slash
OR
12
Range check
Day must be <32
Month must be less than 13
year must be <100
All items must be >0
Whole date must be < today
3
Three from:
Data in main memory can be lost if computer shuts down
Data in main memory can be corrupted
Data in main memory can be accidentally deleted
Data/software may need to be switched from machine to machine
3
© University of Cambridge International Examinations 2011
Page 5
13 (a)
(b)
14
15
16 (a)
(b)
Mark Scheme: Teachers’ version
IGCSE – May/June 2011
Syllabus
0417
Paper
13
Four from:
Router to connect LAN to Internet
Proxy server to send requests for pages/receive pages for passing on to users
Internet browser to search for information
Email software to communicate with other (external) users
Description of electronic conferencing hardware
Description of electronic conferencing software
4
Three from:
Get distracted from own work
Viruses could be downloaded
Spyware could be downloaded
Hackers could get into the system
3
Problem – Description of how electrocution might be caused
Prevention – RCB installed/don’t allow liquids near computers
Problem – trailing cables trips users up
Prevention – create ducts/cover cables with carpets etc.
Problem – heavy equipment falling injuring users
Prevention – sturdy tables
Problem – Description of how fire might be caused
Prevention – CO2 extinguisher/don’t overload sockets
1 mark for each problem (2 max)
1 mark for each prevention (2 max)
4
Four from:
Data fills the screen
Clearly defined input area for each field
Tick boxes/radio buttons to enter choices
drop down menus to select data options
Appropriate spacing for each field
An easy to read font/font size
A sensible font colour/background colour
Easy to follow instructions for completing screen/help icon
No overlapping of items
4
Four from:
Two strategies and two reasons from:
Testing each module with normal/live data/user testing
To see how system behaves in an ordinary day to day situation/system works
as you would expect i.e. no error messages/to ensure system meets the
needs of the user
Testing each module with abnormal and extreme data
To see how system reacts in unusual circumstances/to make sure error
messages appear when data is abnormal
Testing whole system
To ensure the whole system works when all modules are combined
© University of Cambridge International Examinations 2011
4
Page 6
17 (a)
Mark Scheme: Teachers’ version
IGCSE – May/June 2011
Syllabus
0417
Paper
13
Sensor – infra red/movement/proximity
Use – detect movement of burglar
Sensor – pressure
Use – detect body weight
Sensor – temperature
Use – detect body’s presence by monitoring temperature
Sensor – light
Use – detect break in light beam
Sensor – sound
Use – detect any noise made by burglar
(b)
(c)
1 mark for each sensor (2 max)
1 mark for each use (2 max)
4
Four from:
Microprocessor continually monitors sensors.
If light sensor detects light beam interrupted:
If movement sensor activated:
If contact switch activated:
If pressure sensed by processor is greater than preset value:
It temperature sensed by processor is greater than preset value:
If sound sensed by processor is greater than preset value
Microprocessor sends signal to output device.
4
Four from:
Microprocessor controlled devices do much of housework
Do not need to do many things manually
Do not need to be in the house when food is cooking
Do not need to be in the house when clothes are being washed
Can leave their home to go shopping/work at any time of the day
Greater social interaction/more family time
More time to go out/more leisure time/more time to do other things/work
Are able to do other leisure activities when convenient to them
Can lead to unhealthy eating due to dependency on ready meals
Can lead to laziness/lack of fitness
Can encourage a healthy lifestyle because of smart fridges analyzing food
constituents
Microprocessor controlled burglar alarm provides a sense of security
Do not have to leave home to get fit
Manual household skills are lost
4
© University of Cambridge International Examinations 2011
Page 7
18
Mark Scheme: Teachers’ version
IGCSE – May/June 2011
Syllabus
0417
Paper
13
Six from:
Email
Advantages
Saves school cost of printing copies
Can include colour at no extra cost
Can include animated text effects
Disadvantage
Need to have everyone’s email address/not every home has an email address/
computer/internet access
Email might be treated as Spam
People might not welcome unsolicited emails
By hand
Advantage
Can be sure everybody gets a copy
Easier to target who head wants to get it
Disadvantage
Cost of delivery/paying someone to deliver
19 (a)
(b)
20
One mark available for reasoned conclusion
6
Three from:
Web cam/video camera to input/capture video (images of participants/
documents)
Router/modem to transmit data to participants’ (computers)
Microphone to input voices of participants/to speak to other participants
Headphones/speakers to output voices to participants/hear other participants
Large screen/projector to see other participants
Router to connect to internet
Codec to compress data
3
Two from:
Saves travelling time
Do not have to pay for conference room
Do not have to hire transport/pay travel costs
Conferences can be called at short notice
Don’t have to carry bulky documents to conference
2
Three from:
Causes data to be scrambled/encoded
Requires an encryption key/software to encrypt
Requires a decryption key/encryption software to decrypt
Results in data which is not understandable/readable
Protects sensitive data…
… from being understood if it falls in to the wrong hands
3
© University of Cambridge International Examinations 2011